On 09/06/2021 12:55, Scott wrote:
On Wed, 9 Jun 2021 12:20:16 +0100, nightjar wrote:

On 09/06/2021 09:39, ss wrote:
..."Sales of halogen lightbulbs are to be banned in the UK from
September, with fluorescent lights to follow, under government climate
change plans"....

Apart from a few, rarely used, lamps that have yet to be changed, I have
long converted everything to LED.

Me too, except for my bedside lamp which is halogen for colour
rendition. Any comments on reading under a 230V LED spotlight? Would
you go for cool, daylight or warm?

This may or may not help.
https://www.lamps-on-line.com/colour-temperature

Halogen is regarded as 3000k, or warm white.

If you want to stay awake, the the cooler temperatures, to go to sleep
then perhaps aim for the warmer temps.